Monitor Autonomous Database with Performance Hub

Use Performance Hub to monitor your database for a defined time period and download statistical reports. Performance Hub also lets you view real-time and historical performance data for an Autonomous Database instance.

Perform the following prerequisite steps as necessary:

• Open the Oracle Cloud Infrastructure Console by clicking the next to Oracle Cloud.

• From the Oracle Cloud Infrastructure left navigation menu click Oracle Database, and then click Autonomous Database.

1. On the Autonomous Databases page select an Autonomous Database from the links under the Display name column.
2. From the Autonomous Database details page click Performance Hub.

Description of the illustration autonomous-performance-hub.png

See Using Performance Hub to Analyze Database Performance more information.

Component	Description
Top Area	The top of the Performance Hub page shows the following: Quick Select: Use to quickly set the time range to one of Last Hour, Last 8 Hours, Last 24 Hours, or Last Week. Time Range: Use to set the date and time range for Performance Hub to monitor. Time Zone: Select an entry from this list to specify times based on Coordinated Universal Time (UTC), your local web browser time (Browser), or the database time zone setting (Database). Activity Summary (Average Active Sessions): shows active sessions during the selected time range. It displays the average number of active sessions broken down by CPU, User I/O, and Wait. It also shows the Max CPU usage. You can hide or show the activity summary by selecting Hide Activity Summary. Reports: Select to view the Automatic Workload Repository (AWR) report. The AWR report collects, processes, and maintains performance statistics for problem detection and self-tuning purposes. This data is both in memory and stored in the database.
Active Session History (ASH) Analytics	ASH Analytics is displayed by default. This tab shows Active Session History (ASH) analytics charts to explore the Active Session History data. You can drill down into database performance across multiple dimensions such as Consumer Group, Wait Class, SQL ID, and User Name. Select an Average Active Sessions dimension and view the top activity for that dimension for the selected time period. For more information, see ASH Analytics.
SQL Monitoring	SQL statements are only monitored if they've been running for at least five seconds or if they're run in parallel. The table displays monitored SQL statement executions by dimensions including Last Active Time, CPU Time, and Database Time. The table displays currently running SQL statements and SQL statements that completed, failed, or were terminated. The columns in the table provide information for monitored SQL statements including Status, Duration, and SQL ID. For more information, see SQL Monitoring.
Automatic Database Diagnostic Monitor (ADDM)	ADDM tab provides access to analysis information gathered by the Automatic Database Diagnostic Monitor (ADDM) tool. ADDM analyzes AWR (Automatic Workload Repository) snapshots on a regular basis, locates root causes of any performance problems, provides recommendations for correcting the problems, and identifies non-problem areas of the system. AWR is a repository of historical performance data, therefore ADDM can analyze performance issues after the event, often saving time and resources in reproducing a problem. For more information, see Automatic Database Diagnostic Monitor (ADDM).
Workload	Use the Workload tab to visually monitor the database workload to identify spikes and bottlenecks. This tab shows four chart areas that show database workload in various ways: CPU Statistics: Charts CPU usage. Wait Time Statistics: Shows the wait time across the database's foreground sessions, divided by wait classes. Workload Profile: Charts user (client) workload on the database. Sessions: Shows the number of sessions, successful logons, and current logons. For more information, see Workload.
Blocking Sessions	Blocking Sessions hierarchically lists sessions that are waiting or are blocked by sessions that are waiting. You can set the minimum wait time required for sessions to be displayed in the list, and you can view a variety of information about a session to determine whether to let it continue or to end it. For more information, see Blocking Sessions.

See Using Performance Hub to Analyze Database Performance more information.